100 Replies to “How to Build a Laser Security System”

  1. while he was saying the required thing i didnt knew most of it at that moment i knew that i will build some.thing to warn me when someone entre my room to play with my ps3 🙁

  2. Simple, Just Get a dummy Camera, Keep it in Visible Place, A small Orange LED as Laser beam & Attention Note: Danger/BEWARE Laser Beam is ON. it works.

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  4. Things you'll need : laser pen, Alarm system.

    Step one put lazer pen near door with alarm system.
    step two activate alarm system
    step three catch theif
    step four smile

  5. I actually own most of this…all except the soldering tools
    I have this electronics learning lab kit, came with a bunch of components…all i need is the soldering tool…this would be a nice project for me as I have security problems

  6. I'm going to make this for a physics project but I'm wondering why on the list you didn't mention the voltage regulator

  7. I am an electrical engineering student so it was pretty easy to get the materials, however the thing looks to conspicuous once its set up so it will probably deter the thief from taking your 'valuable' 🙁 

  8. I can do an alarm with some transistors, an use an infrared laser and a photo-transistor on the door to activate the alarm with a 7404(not).

  9. Hello,
    I have a question. Can we use a buzzer just instead of the camera, keeping everything else the same? Please help.

  10. can i use buzzer also in this???….. and i want the buzzer to ring for about 1 or 2 minutes even after the intruder gone back from the laser??

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